Availability
Yoshimura Signature Series RS-4 Mufflers
Not Yet Reviewed
USFS-approved spark arrester sound inserts come installed in the mufflers. Material options of polished aluminum and stainless steel are available for the mufflers. Yoshimura Signature Series RS-4 components are
USFS-approved spark arrester sound inserts come installed in the mufflers. Material options of polished aluminum and stainless steel are available for the mufflers. Yoshimura Signature Series RS-4 components are tested, documented, and marked as required by federal and state regulations. Order the model recommended for your application.
Showing In Stock Items. Show All 8 Items.
Muffler, Signature Series RS-4, Pentagonal, Aluminum Body, Brushed, Carbon Fiber End Cap, Yamaha, Each
Part Number: YSH-234812D321
Not Yet Reviewed
Estimated Ship Date: May 20, 2026 if ordered today
Estimated Ship Date: May 20, 2026 if ordered today
RS-4 SIG S/O SS/AL/CF
Part Number: YSH-231022D320
Not Yet Reviewed
Estimated Ship Date: May 20, 2026 if ordered today
Estimated Ship Date: May 20, 2026 if ordered today
SIGNATURE RS-4 SO SS/AL/CF
Part Number: YSH-234832D320
Not Yet Reviewed
Estimated Ship Date: May 20, 2026 if ordered today
Estimated Ship Date: May 20, 2026 if ordered today
RS-4 SLIP-ON SS/AL/CF YZ250F
Part Number: YSH-231032D320
Not Yet Reviewed
Estimated Ship Date: May 21, 2026 if ordered today
Estimated Ship Date: May 21, 2026 if ordered today
RS-4 SIGN S/O SS/AL/CF
Part Number: YSH-264622D320
Not Yet Reviewed
Estimated Ship Date: May 20, 2026 if ordered today
Estimated Ship Date: May 20, 2026 if ordered today
Muffler, Signature Series RS-4, Pentagonal, Aluminum Body, Brushed, Carbon Fiber End Cap, Kawasaki, Each
Part Number: YSH-242932D320
Not Yet Reviewed
Estimated Ship Date: May 20, 2026 if ordered today
Estimated Ship Date: May 20, 2026 if ordered today
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster